package ydl.wheel.widget;

/**
 * Wheel changed listener interface.
 * <p>
 * The currentItemChanged() method is called whenever current wheel positions is
 * changed:
 * <li>New Wheel position is set
 * <li>Wheel view is scrolled
 */
public interface OnWheelChangedListener {
	/**
	 * Callback method to be invoked when current item changed
	 * 
	 * @param wheel
	 *            the wheel view whose state has changed
	 * @param oldValue
	 *            the old value of current item
	 * @param newValue
	 *            the new value of current item
	 */
	void onChanged(WheelView wheel, int oldValue, int newValue);
}
